# AGENTS.md Attack: Web Page Hijacks Codex and Claude Code via Downloads

> Source: <https://byteiota.com/agentsmd-downloads-attack-codex-claude-code/>
> Published: 2026-10-26 10:16:45+00:00

A web page can silently drop a malicious AGENTS.md into your Downloads folder. Codex obeyed it 90% of the time. Here is what happened and what to do now.

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AGENTS.md Attack: Web Page Hijacks Codex and Claude Code via Downloads
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